[alsa-devel] pointer callback question
tiwai at suse.de
Fri Feb 13 07:26:24 CET 2009
At Thu, 12 Feb 2009 19:04:10 +0100,
Tim Blechmann wrote:
> Takashi Iwai wrote:
> > At Thu, 12 Feb 2009 18:55:49 +0100,
> > Tim Blechmann wrote:
> >>>> the brief log is (4 periods of 64 frames):
> >>>> stream_pointer at 64
> >>>> stream_pointer at 128
> >>>> stream_pointer at 192
> >>>> stream_pointer at 256
> >>> This is invalid. The pointer callback must return 0 in this case.
> >>> The value the pointer callback returns is between 0 and buffer_size-1.
> >> sry, typo, 5 periods of 64 frames
> > Then it must be OK. If the stream is stopped, it's likely by the
> > buffer underrun detection or so...
> is there any way to compile alsa to get some debugging information about
Did you enable CONFIG_SND_DEBUG=y and others?
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